Khan Academy
7,713 videos, +5,400,000 subscribers



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Possible transformations example | Transformations | Geometry | Khan Academy4:410
Rotating segment about origin example | Transformations | Geometry | Khan Academy1:170
Determining the line of reflection | Transformations | Geometry | Khan Academy4:580
Determining a translation between points | Transformations | Geometry | Khan Academy3:140
Figuring out coordinate of bended figure using trig | Trigonometry | Khan Academy9:490
Squeeze theorem exercise example | Limits | Differential Calculus | Khan Academy3:580
Reflecting line across another line example | Transformations | Geometry | Khan Academy1:160
Constructing square inscribed in circle | Geometric constructions | Geometry | Khan Academy2:470
Getting a ticket because of the mean value theorem7:120
Finding where the derivative is equal to the average change4:500
Maximizing function at value4:140
Mean value theorem6:370
Electrodes and voltage of Galvanic cell | Chemistry | Khan Academy4:330
Introduction to galvanic/voltaic cells | Chemistry | Khan Academy6:000
Redox reaction from dissolving zinc in copper sulfate | Chemistry | Khan Academy5:100
Redox reaction with iron | Redox reactions and electrochemistry | Chemistry | Khan Academy6:700
Introduction to redox reactions | Redox reactions and electrochemistry | Chemistry | Khan Academy10:540
Unusual oxygen oxidation states | Redox reactions and electrochemistry | Chemistry | Khan Academy4:150
Practice determining oxidation states | Chemistry | Khan Academy4:270
Oxidation state trends in periodic table | Chemistry | Khan Academy8:380
Oxidation and reduction | Redox reactions and electrochemistry | Chemistry | Khan Academy11:400
Organelle overview5:140
Endoplasmic reticulum and Golgi bodies | Biology | Khan Academy11:400
Nuclei, membranes, ribosomes, eukaryotes and prokaryotes7:120
When is a particle speeding up8:570
Modeling a forgetting curve5:000
Derivative and marginal cost4:400
Approximating incremental cost with derivative7:460
Renting versus buying a home11:380
Saltatory conduction in neurons11:800
Electrotonic and action potential10:180
Derivative of triple composition | Taking derivatives | Differential Calculus | Khan Academy7:800
Total distance traveled by a particle | Differential Calculus | Khan Academy10:900
Analyzing particle movement based on graphs | Differential Calculus | Khan Academy5:200
When a particle is speeding up11:230
Squeeze theorem or sandwich theorem | Limits | Differential Calculus | Khan Academy7:110
Dividing fractions example | Fractions | Pre-Algebra | Khan Academy1:170
Multiplying challenging decimals | Decimals | Pre-Algebra | Khan Academy4:250
Multiplying decimals: place value and reordering | Decimals | Pre-Algebra | Khan Academy6:290
Introduction to multiplying decimals | Decimals | Pre-Algebra | Khan Academy3:500
Capstone exponent properties example | Exponent expressions and equations | Algebra I | Khan Academy7:170
Products and exponents raised to an exponent properties | Algebra I | Khan Academy5:580
Negative bases and exponents classification example | Algebra I | Khan Academy7:520
More negative exponent intuition | Exponent expressions and equations | Algebra I | Khan Academy2:420
Thinking more about negative exponents | Algebra I | Khan Academy6:380
Introduction to negative exponents | Exponent expressions and equations | Algebra I | Khan Academy5:230
How far can you see from a plane window7:110
Constructing a geometric series for new users | Precalculus | Khan Academy8:300
Introduction to rational and irrational numbers | Algebra I | Khan Academy5:550
Proof that there is an irrational number between any two rational numbers | Algebra I | Khan Academy5:330
Sum and product of rational numbers | Rational and irrational numbers | Algebra I | Khan Academy2:460
Proof that square root of prime number is irrational | Algebra I | Khan Academy7:280
Proof that square root of 2 is irrational | Algebra I | Khan Academy7:470
Recognizing rational and irrational expressions example | Algebra I | Khan Academy2:360
Proof that rational times irrational is irrational | Algebra I | Khan Academy3:150
Approximating irrational number exercise example | Pre-Algebra | Khan Academy3:360
Proof that sum of rational and irrational is irrational | Algebra I | Khan Academy3:240
Matching radical functions with graphs exercise example | Algebra II | Khan Academy3:420
Equations for radical functions example | Functions and their graphs | Algebra II | Khan Academ5:300
Flipping and shifting radical functions | Functions and their graphs | Algebra II | Khan Academy7:150
Absolute value graphing exercise example | Functions and their graphs | Algebra II | Khan Academy3:120
Graphs of absolute value functions | Functions and their graphs | Algebra II | Khan Academy8:340
Expressions with rational numbers | 7th grade | Khan Academy5:590
How to convert kilograms to milligrams and tons to ounces | Khan Academy4:240
How to convert gallons to quarts, quarts to pints, pints to cups, and cups to ounces | Khan Academy2:370
How to convert kilometers to meters and meters centimeters | Khan Academy2:370
U.S. customary units: fluid volume | 4th grade | Khan Academy7:210
Metric system: units of weight | 4th grade | Khan Academy4:260
Metric system: units of volume | 4th grade | Khan Academy4:140
Fractions as division by power of 10 | Place value and decimals | 5th grade | Khan Academy5:700
Dividing by two digits example 1 | Arithmetic operations | 5th grade | Khan Academy5:900
Comparing distributions with dot plots (example problem) | 7th grade | Khan Academy4:000
How many people can a blimp carry | Perimeter, area, and volume | Geometry | Khan Academy6:500
Constructing a shape by reflecting over 2 lines | Transformations | Geometry | Khan Academy7:200
Rotating polygons 180 degrees about their center | Transformations | Geometry | Khan Academy4:800
Constructing an exponential equation example | Algebra II | Khan Academy8:480
Finding a piecewise function definition from graph | Algebra II | Khan Academy4:230
Matching expressions to define intervals of functions example | Algebra II | Khan Academy4:480
Estimating a solution to nonlinear system with calculator part 2 | Algebra II | Khan Academy4:250
Estimating a solution to nonlinear system with calculator | Algebra II | Khan Academy8:300
Reasonable samples | Statistical studies | Probability and Statistics | Khan Academy4:170
Curly arrow conventions in organic chemistry6:590
Constructing quadrilateral based on symmetry | Transformations | Geometry | Khan Academy3:700
Polynomial end behavior exercise example | Algebra II | Khan Academy2:340
Another polynomial end behavior example | Algebra II | Khan Academy7:500
Polynomial end behavior example | Polynomial and rational functions | Algebra II | Khan Academy5:430
Polynomial end behavior | Polynomial and rational functions | Algebra II | Khan Academy8:100
Using the Pythagorean trig identity | Trig identities and examples | Trigonometry | Khan Academy6:150
Pythagorean trig identity from unit circle | Trigonometry | Khan Academy6:120
Pythagorean trig identity from soh cah toa | Trigonometry | Khan Academy4:160
Modeling ticket fines with exponential function | Algebra II | Khan Academy5:370
Decay of cesium 137 example | Exponential and logarithmic functions | Algebra II | Khan Academy9:130
Constructing linear and exponential functions from graph | Algebra II | Khan Academy7:380
Constructing linear and exponential functions from data | Algebra II | Khan Academy5:170
Introduction to complex numbers | Imaginary and complex numbers | Algebra II | Khan Academy4:390
Quadratic inequality example 2 | Functions and their graphs | Algebra II | Khan Academy7:540
Quadratic inequality example | Functions and their graphs | Algebra II | Khan Academy7:410
Rewriting a quadratic function to find roots and vertex | Algebra I | Khan Academy8:290
Simplifying with exponent properties | Exponent expressions and equations | Algebra I | Khan Academy2:510
Solving for a fractional exponent | Exponent expressions and equations | Algebra I | Khan Academy4:200



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